Machine for operating on soles



A. E. JOHNSON.

MACHINE FOR OPERATING ON SOLES.

APPLICATION FILED MAR- 26,1918.

Patented June 22, 1920 2 SHEETS-SHEET L A, E. JOHNSON. MACHINE FOR OPERATING 0N SOLES.

APPLICATION FILED MAR. 26, I9I8- 1,344,041, Patnted June 22,1920.

2 SHEETS-SHEET 2.

'To' all whom it may concern .uN TEo -sita'rleis PATENT OFFICE-.1

ALBERT E. JOHNSON, F BEVERLY, MASSACHUSETTS, ASSIGNOIt'llt) Unr'mn SIHOE MACHINERY CORPORATION, or PATERSON, NEW JERSEY, .A CORPORATION OF NEW JERSEY.

- r mncniniiron mamas 0N 'soLEsl f Be itjknown thatfl, ALBERT a "citizen oi' the United States,resid1ng at Beverly,in the county of Essex and State of Massachusetts, have 'invented certain new and useful Improvements in Machines for Operating on Soles; and I do hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will en; able others skilled in the art to'w hich 1t appertains to make and use the same.

This invention relates to machines for operating on boot and' shoe soles, and more particularly to such machines tor'pei'manently setting the lip "or marginal rib thereon.

. neling or splittin the marginal portion of the sole body to term a flap, must be acted upon by soine'means adaptedtoimpart;a

permanent bend to the hp at its base which herwis'e would'tend to return to its or1g- 'inalposition afteii t had been turned up.

This'permanent setting of the lip' in upstanding position is usually accomplished by machines which apply pressure to the lip and adjacent parts of the. sole.' Certain machines have been'devised which, in addition to applying pressure to the parts, crimp or corrugate the upturned lip thereby insuring the permanence of its form. An ex-' ample of a machine of thistype is found in the United States patent to Albert E. J ohnson, No. 1,213,770, dated January 23. 1.917.

when operating on laminated material, such as leatherboard, it has been found that, whether or not the lip is'crnnped, the turning up of the lip tends tosplitthe sole along thesplane of cleavage of the laminae which has'been divided by the channeling or splitting operation. Thus on a Gem insole, in which the lip is formed by splitting the edge r. of the sole and thenturningupone part of the edge fromthe bottom of thefisplit, the turning up otthe lip tends to deepen the split in advance of the lip turning tools and as the height of the portion to-beturned up is determined by the bottom of the split,

the lip: gradually becomes higher as its base moves inwardly. toward the center of the sole. I This, of course, results in a crippled insole.v V

- lhQne ob ject of the present-invention is to E. Johnson,

, material.

. Specificationof Letters Patent." I June j n p licatien m March 26, 19181 sunrise/224x207.

provide amachine of the character describedwhich will overcome the difiiculty nowencountered in operating on soles of laminated To the accomplishment of this object one feature vof the invention i l templates the provisionjofmeans for :poSitively determining the width offthe'man ginaljportionvof the sole turned u to form the lip. This featureispreferabl y, into effect byprovidin'g a. age for locating the edge of the sole with re atlon to the'base of the lip being-formed. Another object of the invention is" to provide a hp turning machine particularly adapted for turning u and crimping the lip 1 }Of iI1S0leS 'made from eatherboard-oranan- The upstanding lip of certain types of insoles, in which the lip formed by-chan-- alo'g'ous nonstretchable material. To theaccomplishment of this object other features ofthe invention reside in the formand recarried. 7

lation "of the lip, engaging tools, as will be ;more fully described, the advanta es 1 of which will be apparent to those ski led in the art to which the invention relates.

The'various features'of the invention will be best understood from the following descriptionof the preferred embodiment of the invention illustrated in theaccom'pailying drawings, in whichf j V v. r

c Figure 1 is a front elevation of them. chine; i p f Fig. 2is a detail View in perspective showing the relation of the plow :for. lifting the lip in advance ofvthe crimpingfr'ollsand the'presser foot for giving the upturnedlip itsfinal position; i g I y it Fig. 3, is a partial end elevationon an enlarged scaleshowing particularly the lip engagingtools; i

Fig. 4 is a central vertical section, on an enlarged scale, of the workengaging ,instriiinentalities; I .u

5 is a detail'view ofa 'portiono'f. Fig.4: but on an enlarged. scale; *i 6 isa partial section, on the line 6-6 ofF1g.5 enlarged to show the form of, the

inside lip crimping teeth; and g Fig is a greatly e largeddetailview of the outside lip crimping teeth. i ,1 The general construction and drivingconnections of the embodiment vof the" invention illustrated. in the drawings may be and preferably issimilar to that shown in the aforementioned patent. Briefly stated, the machine head 10.jprovides bearings for, a I

shaft12 carrying the outside lip roll which is driven by a pulley 14. An inside lip roll is mounted on a shaft 16 which is carried by a movable arm 18 and driven through gears 20 from the shaft 12. The inside lip roll is pressed toward the outside roll by a spring 22. A presser roll 24 is mounted on a mov= .structed and arranged to operate on single lipped Gem insoles and, as is usual in a machine of this type, the inside and outside lip rolls co-act'to' form the upstanding 11p and, in conjunction with the presser roll, to

feed the work. The outside lip roll, as shown particularly in- Figs. 1, 3 and 4, coinprises a cylindrical shank 32 screwed on to the reduced end of theshaft 12." The projectingend of the shank 32 is provided with afrusto-conical flange 3Gthe periphery of which is provided with a series of straight teeth 38. In order that the crimp formed by the teeth 38 shall not extend to the base of the lip where it joins the feather, the end of the roll is covered by a disk 40 of a diameter slightly smaller than the outside diameter of the connecting ends of the teeth 38. The disk is slotted for a screw driver and is secured to-the shank 32 by a threaded stein 42. o

The insideliprollfcomprises a cylindrical shank 44 having atapered hole to receive the reduced end'of the shaft 16.. The projecting end of the shank is reduced in diameter and provided with straight teeth 48 which co-act with the teeth 38 on the outside lip roll to crimp the lip. In order that the crimp shall not extend to the base of the lip, the inside feed roll is provided with a a smooth edged button 50 which covers the ends of the teeth 48 andalso provides a positive feeding means. As shown particularly in Figs. 4 and 5 the button 50 is driven into the shank 44 and its outer surface is provided with radial teeth'52 which engage the body of the sole about opposite the greatest diameter of the roll 24 and insure a positive feed thereof. The means employed to limit the width of the marginal portion of the sole which maybe tUIDGLl'LIPtO' form the lip is an edge gage whichis preferably arranged toengage that part of the sole edge which is being turned up to form the lip. The edge gage 54 (Figs'l, 3 and 4) is in the form of a collar"surrounding the shank 44 of the inside lip roll. and engaging the edge of the lip just'prior to and during the crimping operation; The workengagingsurface of the edge gage is in close contact with the flange 36 of the outside lip roll in order that there may be no opening therebetween into which the edge of the lip might be forced. In order that the edge gage may not bind against the flange when theiarm 18 is swung about its pivot to separate the rolls, it is mounted to yield against the pressure of the flange, as the edge gage is movedupwardly with the inside roll. As shown in Fig.4, the edge gage 54 is loosely mounted on the shank 44 and is forced against the flange 86 by a spring 56 surrounding the shank and confined between the edge gage and a shoulder on the shank. The edge gage is prevented from rotation with the in side lip tool by a slotted arm 58, integral with the edge gage, which embraces a bracket 60 secured to the end of the arm 18. The spring 56 is of sufficient strength to form, in effect,a rigid abutment for the lip but when the rolls are separated the edgegage can yield under the action of the flange on the outside of the lip roll. 7

It vhas been found desirable to give the lip a secondary bend toward the center of the sole after having been bent by the rolls. For this purpose a bending tool 62 isad justably mounted on the bracket (30 and provided with a rounded edge 64 (Figs. 2 and 3) which engages the lip as it leaves the crimping rolls and gives it a further inward bend so that when it is free to assume its final position, it will be at the desired angle to the body of the sole. This angle may be varied by adjusting the bending tool toward or frornthe sole.

The split margin of the sole is first lifted by a plow 66 which engages the work in advance of the rolls and turns up the lip suiiiciently to be engaged by the rolls. i

The particular form of the co-acting teeth on the inside and outside lip rolls' as shown in Figs. 5,6 and T,w-hich is the best at present known for operating on non-stretchable sole material, has been determined by long experiment on such material. The smooth edges of'the button 50 and the disk 40 engage opposite sides of the base of the lip, thus determining the spacing of the teeth with respect to the lip and preventing the teeth from exerting any molding pressure on the lip. The crimp therefore is formed by bending the lip as it passes between the toothed rolls as distin uished from molding a crimp by compressio n.

From an inspection'of Figs; 4 and 5 it will be apparent thatthe diameter of that part of the inside lip roll in engagement with the lip is slightly tapered forming an angle sloping from front to rear. The taper of the'frusto-conical flange 3,6 isin'the opposite direction forming an angle sloping from rear to front, but the two angles are not complemental, one to the other. The angles which have been found to be most successful in practice, although some variation may be permitted, are an angle of HR between the teeth 48 and the axis of the inside lip roll, an angle of 30 between the top of the teeth 38 and the axis of the outside roll, and an angle of 14 between thebottom of the teeth 38 and said axis. The tops and bottoms of the teeth 38 and 48 are rounded as shown in Figs. 6 and 7, whichare greatly enlarged. It will be noticed that the shapes of the teeth are not generated after the manner of gear teeth, but that thetooth 48 acts to deflect the lip between the supports formed by the teeth 38 on either side.

It will be apparent to those skilled in the art that certain features of the invention are not limited to use ina machine for operating on the single lipped insole, which has been described, but that these features can be ad vantageously employedin machines foroperating on other types of soles; andalso certion, means for turning upthe lip, and additional"means.to determine the height of the lip. a

2. A machine for operating on soles having a lip on one face having, in combination,

means r turning up the lip, and. means to engage the top of the lip to limit its height. 3. In a machine forturning up a lip on a sole,"a gage against which the edge of the lip bears to determine the relation between the Y base of the lip 'andthe edge of the sole.

4. A machine for turning up a lip on a sole having, in combination, a pair of rolls pressure.

to engage opposite sides of the lip, and a gage to limit the height of thelip engaged between the rolls. l

5. A machine for turning up a lip on a sole having, in combination, a pair of rolls to engage opposite sides of the lip, a gageto limit the height of the lip engaged between the rolls, and means to permit a yieldlng movement of the gage longitudinally of the rolls. a t i 6. In a machine for operating on a lipped sole, a lipengaging roll having a lip engaging surface equal in width'to the height of thelip,'-and an edge gage to prevent the lip from'projecting beyond the lip engaging surface of the roll.

7. A machine for operating on soles having, in combination, an outside lip roll having a lip engaging surface equal in width to the height of the lip, an inside lip roll, a

against'the back of the outside roll. 8. .A'machine for crimping the lip of an insole having, in combination, a rotary crimping roll for engaging the outside of the lip having a series of straight teeth at an angle to the axis of the roll, and a rotary crimping roll for en aging the inside of the li having a series of straight teeth at an angfe tothe axis of that roll, other than coinplemental to the first named angle.

9- In a machine for crimping the lip of an insole, a pair of lip, engaging rolls having teeth constructed to engage and bend the lip therebetween into a crimp without a com pression of the lip materialsufiicient to mold a crimp therein.

- 10. In a machine for crimping the lip of an insole, a pair of lip engagin rolls hav- 2 ing teeth constructed to engage t e lip therebetween and bend its free margin into a I crimp leaving its base free from crimping ALBERT E. ,rornvsoN.v

gagemounted thereon, and a spring to hold a the, work engaging surface of the gage It is hereby certified that in Letters Patent No. 1,344,041, granted June 22,

1920, upon the application of Albert E. Johnson, of Beverly, Massachusetts, for

an improvement in Machines for Operating on Soles, an error appears in the printed specification requiring correction as follows: Page 2, line 32, for the word connecting read contacting; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 3d day of August, A. D., 1920.

[SEAL] R. F. VHITEHEAD,

Acting Commissioner of Patents. 

